/*
 * MIT License
 *
 * Copyright (c) 2023 北京凯特伟业科技有限公司
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in all
 * copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 */
package com.je.bpm.engine.impl.bpmn.helper;

import com.je.bpm.engine.ActivitiIllegalArgumentException;
import com.je.bpm.engine.delegate.DelegateExecution;
import com.je.bpm.engine.delegate.Expression;
import com.je.bpm.engine.impl.interceptor.CommandContext;

public class SkipExpressionUtil {

    public static boolean isSkipExpressionEnabled(DelegateExecution execution, String skipExpression) {
        if (skipExpression == null) {
            return false;
        }
        return checkSkipExpressionVariable(execution);
    }

    public static boolean isSkipExpressionEnabled(DelegateExecution execution, Expression skipExpression) {
        if (skipExpression == null) {
            return false;
        }
        return checkSkipExpressionVariable(execution);
    }

    private static boolean checkSkipExpressionVariable(DelegateExecution execution) {
        final String skipExpressionEnabledVariable = "_ACTIVITI_SKIP_EXPRESSION_ENABLED";
        Object isSkipExpressionEnabled = execution.getVariable(skipExpressionEnabledVariable);
        if (isSkipExpressionEnabled == null) {
            return false;
        } else if (isSkipExpressionEnabled instanceof Boolean) {
            return ((Boolean) isSkipExpressionEnabled).booleanValue();
        } else {
            throw new ActivitiIllegalArgumentException(skipExpressionEnabledVariable + " variable does not resolve to a boolean. " + isSkipExpressionEnabled);
        }
    }

    public static boolean shouldSkipFlowElement(CommandContext commandContext, DelegateExecution execution, String skipExpressionString) {
        Expression skipExpression = commandContext.getProcessEngineConfiguration().getExpressionManager().createExpression(skipExpressionString);
        Object value = skipExpression.getValue(execution);
        if (value instanceof Boolean) {
            return ((Boolean) value).booleanValue();
        } else {
            throw new ActivitiIllegalArgumentException("Skip expression does not resolve to a boolean: " + skipExpression.getExpressionText());
        }
    }

    public static boolean shouldSkipFlowElement(DelegateExecution execution, Expression skipExpression) {
        Object value = skipExpression.getValue(execution);
        if (value instanceof Boolean) {
            return ((Boolean) value).booleanValue();

        } else {
            throw new ActivitiIllegalArgumentException("Skip expression does not resolve to a boolean: " + skipExpression.getExpressionText());
        }
    }
}
